package com.qdu.driver;

import com.qdu.bean.bikeWritable;
import com.qdu.mapper.rentPerRestHourMapper;
import com.qdu.reducer.rentPerRestHourReducer;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

import java.io.IOException;

public class rentPerRestHourDriver {
    public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
        args =new String[]{"D:/train.csv", "D:/outputlnx2"};
        Configuration conf=new Configuration();
        Job job= Job.getInstance(conf);

        job.setJarByClass(rentPerRestHourDriver.class);

        job.setMapperClass(rentPerRestHourMapper.class);
        job.setReducerClass(rentPerRestHourReducer.class);

        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(bikeWritable.class);

        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(bikeWritable.class);

//        FileInputFormat.addInputPath(job,new Path(args[0]));
//        FileOutputFormat.setOutputPath(job,new Path(args[1]));

        FileInputFormat.setInputPaths(job, args[0]);
        Path outputPath = new Path(args[1]);
        FileSystem fs = FileSystem.get(conf);
        if(fs.exists(outputPath)){
            fs.delete(outputPath, true);
        }
        FileOutputFormat.setOutputPath(job, outputPath);

        boolean result= job.waitForCompletion(true);
        System.exit(result ? 0 : 1);
    }
}
